~/repos/Boost-Graph$ prove -b
t/Graph.t .. 1/? 
#   Failed test 'Depth First Search Levels (0 root): 4'
#   at t/Graph.t line 334.
#          got: '1'
#     expected: '4'

#   Failed test 'Depth First Search Levels (0 root): 5'
#   at t/Graph.t line 336.
#          got: '2'
#     expected: '5'

#   Failed test 'Depth First Search Levels (0 root): 7'
#   at t/Graph.t line 338.
#          got: '3'
#     expected: '7'

#   Failed test 'Depth First Search Levels (0 root) depth(7): 3'
#   at t/Graph.t line 339.
#          got: '2'
#     expected: '3'

#   Failed test 'Depth First Search Levels (0 root): 6'
#   at t/Graph.t line 340.
#          got: '4'
#     expected: '6'

#   Failed test 'Depth First Search Levels (0 root) depth(6): 2'
#   at t/Graph.t line 341.
#          got: '1'
#     expected: '2'

#   Failed test 'Depth First Search Levels (0 root): 1'
#   at t/Graph.t line 342.
#          got: '5'
#     expected: '1'

#   Failed test 'Depth First Search Levels (0 root) depth(1): 1'
#   at t/Graph.t line 343.
#          got: '2'
#     expected: '1'

#   Failed test 'Depth First Search Levels (0 root): 2'
#   at t/Graph.t line 344.
#          got: '7'
#     expected: '2'

#   Failed test 'Depth First Search Levels (0 root) depth(2): 2'
#   at t/Graph.t line 345.
#          got: '3'
#     expected: '2'

#   Failed test 'Depth First Search Levels (0 root): 3'
#   at t/Graph.t line 346.
#          got: '6'
#     expected: '3'
# Looks like you failed 11 tests of 95.
t/Graph.t .. Dubious, test returned 11 (wstat 2816, 0xb00)
Failed 11/95 subtests 

Test Summary Report
-------------------
t/Graph.t (Wstat: 2816 Tests: 95 Failed: 11)
  Failed tests:  75, 77, 79-87
  Non-zero exit status: 11
Files=1, Tests=95,  0 wallclock secs ( 0.03 usr  0.00 sys +  0.04 cusr  0.00 csys =  0.07 CPU)
Result: FAIL